Biomolecules and Chemistry in Everyday Life 2 Question 6
7. The two monomers for the synthesis of nylon 6,6 are
(2019 Main, 12 Jan II)
(a) $\mathrm{HOOC}\left(\mathrm{CH}{2}\right){4} \mathrm{COOH}, \mathrm{H}{2} \mathrm{~N}\left(\mathrm{CH}{2}\right){4} \mathrm{NH}{2}$
(b) $\mathrm{HOOC}\left(\mathrm{CH}{2}\right){6} \mathrm{COOH}, \mathrm{H}{2} \mathrm{~N}\left(\mathrm{CH}{2}\right){4} \mathrm{NH}{2}$
(c) $\mathrm{HOOC}\left(\mathrm{CH}{2}\right){4} \mathrm{COOH}, \mathrm{H}{2} \mathrm{~N}\left(\mathrm{CH}{2}\right){6} \mathrm{NH}{2}$
(d) $\mathrm{HOOC}\left(\mathrm{CH}{2}\right){6} \mathrm{COOH}, \mathrm{H}{2} \mathrm{~N}\left(\mathrm{CH}{2}\right){6} \mathrm{NH}{2}$
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Answer:
Correct Answer: 7. (c)
Solution:
- Nylon- 6,6 has following structure:
As it is a condensation polymer hence, each of its monomeric unit must contain 6 carbon atoms in them. Hence, a combination of adipic acid and hexamethylene diamine is the correct answer. Both of these units react as follows to form nylon- 6,6 .
